I was happily using OpenVPN on my old iPad (3rd gen) and still do on my iPhone 5, but for some reason when I'm connecting over a 3G or 4G cellular connection on the iPad Air, it times out. I can connect fine over WiFi, and my first thought was that it may be a server side problem (Virgin Australia), but given that my iPhone is on the same service provider and can connect immediately with the same config files, it doesn't make much sense to me

I would be very grateful if anyone could shed some light on this issue.
Cheers

Here is the log file if it helps:
2013-12-28 20:52:02 LZO-ASYM init swap=0 asym=0
2013-12-28 20:52:02 EVENT: RESOLVE
2013-12-28 20:52:03 Contacting 198.23.71.77:1194 via UDP
2013-12-28 20:52:03 EVENT: WAIT
2013-12-28 20:52:03 Connecting to us-california.privateinternetaccess.com:1194 (198.23.71.77) via UDPv4
2013-12-28 20:52:12 Server poll timeout, trying next remote entry...
2013-12-28 20:52:12 EVENT: RECONNECTING
2013-12-28 20:52:12 LZO-ASYM init swap=0 asym=0
2013-12-28 20:52:12 Contacting 50.23.113.210:1194 via UDP
2013-12-28 20:52:12 EVENT: WAIT
2013-12-28 20:52:12 Connecting to us-california.privateinternetaccess.com:1194 (50.23.113.210) via UDPv4
2013-12-28 20:52:22 Server poll timeout, trying next remote entry...
2013-12-28 20:52:22 EVENT: RECONNECTING
2013-12-28 20:52:22 LZO-ASYM init swap=0 asym=0
2013-12-28 20:52:22 Contacting 198.23.71.90:1194 via UDP
2013-12-28 20:52:22 EVENT: WAIT
2013-12-28 20:52:22 Connecting to us-california.privateinternetaccess.com:1194 (198.23.71.90) via UDPv4
2013-12-28 20:52:32 Server poll timeout, trying next remote entry...
2013-12-28 20:52:32 EVENT: RECONNECTING
2013-12-28 20:52:32 LZO-ASYM init swap=0 asym=0
2013-12-28 20:52:32 Contacting 50.23.113.234:1194 via UDP
2013-12-28 20:52:32 EVENT: WAIT
2013-12-28 20:52:32 Connecting to us-california.privateinternetaccess.com:1194 (50.23.113.234) via UDPv4
2013-12-28 20:52:42 Server poll timeout, trying next remote entry...
2013-12-28 20:52:42 EVENT: RECONNECTING
2013-12-28 20:52:42 LZO-ASYM init swap=0 asym=0
2013-12-28 20:52:42 EVENT: RESOLVE
2013-12-28 20:52:42 Contacting 198.23.71.77:1194 via UDP
2013-12-28 20:52:42 EVENT: WAIT
2013-12-28 20:52:42 Connecting to us-california.privateinternetaccess.com:1194 (198.23.71.77) via UDPv4
2013-12-28 20:52:52 Server poll timeout, trying next remote entry...
2013-12-28 20:52:52 EVENT: RECONNECTING
2013-12-28 20:52:52 LZO-ASYM init swap=0 asym=0
2013-12-28 20:52:52 Contacting 50.23.113.210:1194 via UDP
2013-12-28 20:52:52 EVENT: WAIT
2013-12-28 20:52:52 Connecting to us-california.privateinternetaccess.com:1194 (50.23.113.210) via UDPv4
2013-12-28 20:53:02 EVENT: CONNECTION_TIMEOUT [ERR]
2013-12-28 20:53:02 EVENT: DISCONNECTED
2013-12-28 20:53:02 Raw stats on disconnect:
BYTES_OUT : 420
PACKETS_OUT : 30
CONNECTION_TIMEOUT : 1
N_RECONNECT : 5
2013-12-28 20:53:02 Performance stats on disconnect:
CPU usage (microseconds): 23707
Network bytes per CPU second: 17716
Tunnel bytes per CPU second: 0
2013-12-28 20:53:02 ----- OpenVPN Stop -----
2013-12-28 20:53:02 EVENT: DISCONNECT_PENDING